Allows cfg to be updated with any changes rather than always using default properties for those missing (SubnauticaNitrox#1545)

* Allows cfg to be updated with any changes rather than always using default properties for those missing

* Changed Update to handle null actions

Author: Coding-Hen

NitroxModel/Serialization/NitroxConfig.cs

@@ -131,12 +131,12 @@ public void Serialize()
         ///     Ensures updates are properly persisted to the backing config file without overwriting user edits.
         /// </summary>
         /// <param name="config"></param>
-        public void Update(Action<T> config)
+        public void Update(Action<T> config = null)
         {
             try
             {
                 Deserialize();
-                config(this as T);
+                config?.Invoke(this as T);
             }
             finally
             {

NitroxServer/Serialization/ServerConfig.cs

@@ -109,7 +109,7 @@ public string SaveName
         public static ServerConfig Load()
         {
             ServerConfig config = new();
-            config.Deserialize();
+            config.Update();
             return config;
         }
     }

NitroxServer/Server.cs

@@ -133,10 +133,6 @@ public void Stop(bool shouldSave = true)
             if (shouldSave)
             {
                 Save();
-                if (!serverConfig.ConfigFileExists)
-                {
-                    serverConfig.Serialize();
-                }
             }
 
             server.Stop();